Lightguide tamper seal

The invention concerns a tamper seal (1) comprising an optical waveguide (2) arranged to guide a propagating light-beam along a propagation direction, comprising at least a first portion (2A) and a second portion (2B) intended to be respectively arranged on a first part and on a second part of an ob...

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Bibliographic Details
Main Authors SCHNIEPER MARC, BASSET GUILLAUME
Format Patent
LanguageChinese
English
Published 18.05.2016
Subjects
ADVERTISING
CRYPTOGRAPHY
DISPLAY
DISPLAYING
EDUCATION
LABELS OR NAME-PLATES
PHYSICS
SEALS
SIGNS
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Summary:The invention concerns a tamper seal (1) comprising an optical waveguide (2) arranged to guide a propagating light-beam along a propagation direction, comprising at least a first portion (2A) and a second portion (2B) intended to be respectively arranged on a first part and on a second part of an object, said first and a second parts being movable relative to each other. Said optical waveguide (2) is a multimode waveguide comprising at least a waveguide core that has its smallest dimension, defined perpendicular to said propagation direction, greater than 10 [mu]m and smaller than 10mm. Said first portion (2A) comprises an input coupler (3) arranged to couple incident light into said optical waveguide (2) and wherein said second portion (2B) comprises at least one outcoupling surface arranged to couple out at least partially light guided in the optical waveguide (2). Said input coupler (3), said optical waveguide (2) and said outcoupling surface are arranged so as to transmit light from said input coupler (3)
Bibliography:Application Number: CN201480052443